A甲醇; B丙酮; C甲酸; D丙酸
A苯甲酸; B苯酚; C苯甲醇; D苯甲醚
A苯甲酸; B苯酚; C水杨酸; D苯甲醛
A CH3CH2CH2COOH; B CH3CH2CHBrCOOH; C CH3CH2CHNH2COOH; D CH3CH2CHOHCOOH